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7999 Nesvorny (1986 RA3)
Classification: Main-belt Asteroid          SPK-ID: 2007999
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08619590555017226 6.3342e-08  
a 3.052588048242591 3.5485e-08 AU
q 2.789467457152688 2.0101e-07 AU
i 11.69788005013228 6.9533e-06 deg
node 281.8416793846279 4.0925e-05 deg
peri 166.5688385740503 6.7257e-05 deg
M 21.88593346632248 5.4253e-05 deg
tp 2456882.069571677281
(2014-Aug-12.56957168)
0.0002931 JED
period 1948.052810348919
5.33
3.3968e-05
9.3e-08
d
yr
n .1847999181990963 3.2223e-09 deg/d
Q 3.315708639332494 3.8544e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      853  
   data-arc span      13569 days (37.15 yr)  
   first obs. used      1976-12-20  
   last obs. used      2014-02-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52769  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:08:29  

Additional Information
 Earth MOID = 1.80715 AU 
 T_jup = 3.199 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.2 mag n/a MPO263420  
diameter diameter 21.09 km 1.5 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
geometric albedo albedo 0.0629   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5

7999 Nesvorný           Discovered 1986 Sept. 11 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Named in honor of David Nesvorný (b. 1969), a Czech dynamicist, currently at the Universidade de São Paulo, who has contributed to recent important discoveries on chaotic effects in the minor planet belt, their role in depleting resonant gaps, shaping the current belt population, and supplying Mars-crossing objects. In particular, Nesvorný has studied both analytically and numerically the effects of hitherto unstudied three-body resonances and slow, diffusion-like processes. Citation written by P. Farinella at the request of the discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19990728/MPCPages.arcLast Updated: 2010-06-11

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Alternate Designations
 1986 RA3 = 1976 YH6 = 1988 AT3 = 1991 NE8 = 1992 WR9 = 1994 CD19 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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